Gimp-making machine.



G. F. BAUM.

GIMP MAKING MACHINE. APPLiOATION FILED NOV. 21, 1912.

1,098,081. Patented May 26, 1914 2 sums-sum 1. .34

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G. P. BAUM. GIMP MAKING MACHINE. APPLICATION FILED NOV. 21, 1912. 1,098,081 Patented M y 2 ,1914

2 SHBETk-BHBET 2.

HEETEB TATE PATENT @FFEQF.

CHRISTOPH F. BAUM, OF CHICAGO, ILLINOIS.

GIMP-MAKING MACHINE.

To all whom it may concern Be it known that I, Crmrsrorn F. BAUM, a citizen of the United States, and a resident of Chicago, Illinois, have invented certain new and useful Improvements in Gimp- Making lviachines, of which the following is a specification.

The essential object of this invention is to provide a machine which will manufacture a gimp.

As is well known, gimp is now a staple article of commerce and has many uses in connection with the manufacture of apparel, and is employed as an edging for button holes, as a stiffener by milliners, and for many other similar purposes. The gimp itself consists of a core comprising a number of threads or strands suitably twisted together which may be wrapped or woundwith silk or some other fibrous material of any desired color.

Heretoforegimp has been made almost entirely by hand,'but by the use of this ma, chine it is practicable to make a very hard gimp, an article'which is very strong and extraordinarily stiff, and which is free from irregularitiesor lumps. A gimp which is made by this machine is manufactured in almost unlimited lengths, whereas in making the old style hand-manufactured gimp, it was impossible to turn out pieces of any great length. The article which is made by l the use of this machine, moreover, is one in which the outer wrapping of silk is wound around the gimp in a direction contrary to that in which the core is twisted, or in the language of the trade, the gimp is wound against the twist; whereas in the old style processes of manufacture, the gimp was wound in the same direction as the twist. By winding the gimp against the twist, the completed article is very much harder, stiffer, and firmer than with the old style gimp, and does not curl or twist.

Inthe drawings,'Figure 1 is an elevation of a gimp-making'machine embodying the invention; Fig. 2 is a top plan view of the rotating wheel or twisting head which carries the spools for supplyingthe thread or strands which are twisted together to form the core; Fig. 3 is a topplan View of part of the machine; Fig. 1 is an enlarged detail taken at right angles to the view of Fig. 3; Figs. 5 and 6 are views at right angles to each other of the set of pulleys carried upon the twisting head; Fig. 7 is an elevation of Specification of Letters Patent.

Application filed November 21, 1812.

'erably formed of two I-beams 1 and 2 Patented May 26,1914.

Serial No. 732,675.

one device which may-be used for producing 1 tension; Fig. 8 is a sectional view of another device for producing tension; Fig. 9 is a ltop plan'view of the form depicted in Fig. ,7, Fig. 10 is an elevation of the device for receiving and winding the completed gimp;

i and Fig. 11 is a View in elevation of a length of gimp which is produced by this machine.

The various movable members are suitably supported upon a frame which is prefset at right angles to each other and which are carried upon a bed, not shown. A.

bracket 3 is bolted at 4 to the vertical I- beam 1, and upon this bracket is journaled the rotating spool holder 5. Said spool holder comprises an ordinary wheel carrying a number of vertical shafts 6 which are of a size adapted to be received within the central perforation of an ordinary wooden spool, and the wheel 5 is secured to the pulley 7 adapted to be driven by a belt 8. The

spools 9 carry the threadsor strands 10 which are twisted together to form the core, and the number of spools which may be mounted at any time upon the rotating member 5 will conform to the number of v strands desired in the gimp.

Projecting upwardly from the rotating member 5 are the legs 11 and an annular band 12 is supported upon said'legs by bolts 13 said annular band bein rovided with as many perforations 1 1 as there are shaft-s 6 on the rotating member 5. Said legs 11 support a standard 15, and said standard 15 bears three short shafts 16, each of which carries a pulley. The lowermost pulley 17 is provided with a circumferential groove which is almost circular in cross section. The second pulley 18'is provided with a groove which is much deeper than the groove of the pulley 17, while the topmost pulley 19 may be provided with a groove of approximately the same depth as the pulley 18.

The I-beam 2 supports a pair of rails 20, there being one such rail on each side of the machine, and extending from one of said rails 20 to the other are shafts 21 and 22. Said I-beams 2 are slotted at 23 and bolts 24: pass through said slots 23, the bolts 24: being secured to the rails 20. The rails 20 may, therefore, be moved slightly toward the right or toward the left, Fig. 1, and the position of the rails and the various parts carried thereupon thus adjusted within certain limits. Upon the shafts 21 and 22 grooved pulleys 25 are carried. In Fig. 3 of the drawings, there are four grooves upon each pulley, but this number may be varied. Each of the several pulleys 25 is mounted independently of the other upon the shaft which carries the same, and there will be a certain amount of friction caused as each pulley rotates upon its shaft. Suitable collars through which set-screws pass (see Fig. 3) prevent or limit longitudinal movement of the pulleys 25 upon the shafts.

The main body or core 26 of the gimp is formed of a plurality of strands, there being as many strands as there are spools 9 carried upon the rotating twisting head 5, which twisting head comprises the rotating wheel 5 and the various members carried or sup ported thereupon including the annular band 12, the standard 15, and the pulleys journaled upon the standard. The thread from each spool passes through one of the perforations 14 in annular band 12, and all of the several strands 10 which enter into the core 26 pass upwardly from said annular member 12 and engage the pulley 17. From the right-hand side of said pulley 17 the strands pass to the left-hand. side of the pulley 18, thence to the right-hand side of the pulley 19, from whence the core 26 passes over that pulley 25 which is in the lower left-hand corner of Fig. 3. As previously explained, member 5, which carries the spools 9 and which also serves to support the standard 15 and the pulleys borne thereby, is adapted to be rotated and to be driven by the belt 8, and by said belt the twisting-head is rotated at will. The pulleys 17, 18, and 19 are so mounted that the right-hand edge of their respective peripheries is in axial alinement with the shaft '7 upon which the twisting head 5 rotates, or in other words the core 26 as it leaves the topmost pulley 19, will be in alinement with the axis of the shaft 7. It is by the rotating of said mem her 5 that the various strands 10 which enter into and comprise the core 26 are twisted together. The twisted core 26 after passing over the pulley 25 in the lower left-hand corner of Fig. 3, riding in the first groove, passes under, around, and over the lowermost pulley 25 on the shaft 21 riding in the first groove; thence the core 26 passes under, around, and over the first pulley 25 riding in the second groove, and so on, passing back and forth over the pair of pulleys 25 and passing from the top side of one pulley to the bottom side of the other. It is by this repeated passing over and around the pulleys on shafts 21 and 22 that most of the irregularities and lumps are eliminated, and the core is made hard, firm, and strong. In Fig. 1 of the drawings a third shaft is d picted, and the number of shafts and sets of pulleys 25 may be increased if desired. In

Fig. 1 there is also shown a pulley 28 which is merely an idler provided in order to deliver the twisted core 26 to the devices which wrap the silk or other covering around the gimp.

After the core 26, which has previously been formed and twisted and thence passed over the various pulleys 25, is delivered from the idler 28, said core 26 passes over another idler 29, after which it is wound upon a spool 4-6, which spool 46 is driven by any suitable source of power (such as a belt 47), and it is the winding of the completed gimp upon this spool 46 that draws the core 26 through the machine. The gimp is drawn through the machine against the resistance that arises because of the fact that considerable friction is created between the different pulleys over which the gimp passes and the shafts upon which said pulleys respectively rotate, which friction is considerably in creased by the fact that, as best shown in Fig. 4, the different lengths of gimp between the shafts 21 and 22 cross each other. Between the idlers 28 and 29 the bracket 30 is fastened to the beam 2, and the shaft 31 carrying pulley 32 is mounted thereupon. The pulley 32 is driven by the belt 33, and in this manner the spools 34 are carried around and around the core 26. The thread 35 from the spools 34 is then wrapped spirally around the core 26, the thread 35 being paid out as the pulley 32 continues to rotate, and, hence, by the time that the core 26 reaches the idler 29, it will have been wrapped or covered with silk or some other ornamental fibrous material. The pulley 32 is rotated in such a direction that the silk wrapping runs against the twist of the core 26. No particular novelty resides in that part of the machine by which the core 26 is wrapped or covered with silk as there are many devices on the market used for such purposes as wrapping a wire with threads of silk or cotton to provide an insulating covering for the wire, and the members to which the reference numerals 31, 32, 33, and 34 are applied are merely a conventional representation of a wrapping or winding machine of well known construction used in this instance, however, to wrap the twisted core 26 instead of wrapping an electric wire or the like.

The spool or other article upon which the completed gimp is to wind will, of course, be to the right, Fig. 1, of the pulley 29, and since, as just stated, it is the winding of the completed gimp upon this spool that draws the core 26 through the machine, it is obvious that the particular length of core, whether wrapped or unwrapped, intermediate the pulleys 28 and 29 will be stretched taut; hence, the wrapping of the twisted and compacted core will be performed while the same is held tightly stretched. The spools 34 upon which the silk wrapping thread is carried and from which it is paid out, is caused to travel around and around the core 26, or, more particularly, around that length thereof intermediate the pulleys or wheels 28 and 29.

In Fig. 3 of the drawings, there are two pulleys 25 on each shaft 21 and 22. The shafts 21 and 22 may be of any length desired and may carry as many different pulleys 25 as desired, but for each pulley 25 there must be a separate twisting head. The core 26 carried upon the lower pulley 25 in Fig. 3 is formed and twisted by a different twisting head entirely from that twisting head which forms and twists the core 26 shown in connection with the upper pulley 25. Although the terms upper and lower have been used in connection with the different pulleys 25 shown in Fig. 2, it should be understood that those terms are merely relative and are used in connection with said figure to distinguish one set of pulleys from the other. Ordinarily the shafts 21 and 22 will be horizontally disposed. The shaft 27, if one be employed, will also be provided with a pulley or pulleys 25.

In Figs. 7 and 9 a modified form of the invention is shown and in this case there is but one pulley 25, which pulley is provided with a spirally grooved face 27 Secured to or formed integrally with the pulley 25 is a wheel 38 having a grooved periphery 39, which grooved periphery receives the loop from'which the weight lldepends. The

. core 26 passes as many times around this form of pulley 25 as there are spiral grooves upon the face of the pulley. The weight 11 will retard the movement of the pulley 25 and as the core 26 advances through the machine it will have to overcome the resistance caused by the weight, just as in the form shown in Fig. 3, the core 26 must overcome the resistance arising because of the friction of the different pulleys 25 upon the shafts 21 and 22.

In Fig. 8 another modification is shown and in this form the pulley 25 is again provided with the spiral grooves 37. The shaft 21 carries a screw-threaded sleeve &2 upon which the nut 43 is placed, and between the nut 43 and the face of the pulley 25 is the helical spring 441. The position of the nut 43 controls the tension of the spring 44;, and in this manner the friction against which the pulley 25 moves can be increased or diminished as desired. In the form shown in Fig. 8 of the drawings, the hub of the pulley 25 does not directly engage the shaft 21 but the pulley rotates upon the sleeve 12 which encircles said shaft. The view of Fig. 8 is partly in section and partly in elevation.

The most important features of the invention are (1) the relatively small device depicted in Figs. 3 and 4:, and (2') the set of pulleys carried upon the twisting-head. As the various strands which are twisted together to form the core pass upon the lowermost pulley 17 on the I twisting-head, the strands are received within the circular groove, and this circular groove molds or shapes the body of strands so that the core 26 immediately after leaving said lowermost pulley will be ubstantially circular in cross section. The other two grooves being relatively deep as compared to the groove upon the pulley 17, help pack and compress the various strands together. The various parts are so arranged that the particular length of the core 26 between the topmost pulley 19 on the twisting head and the first pulley 25 over which the core passes, is substantially perpendicular at all times, or in other words a line which is at a tangent to the peripheries of the various pulleys 17 18, and 19, will practically coincide with the line perpendicular and tangential to the pulley 25 over which the twisted core first passes. It is the repeated bending back and forth of the twisted gimp and the passing of the same over and around the different pulleys while a relatively slight frictional resistance is being exerted upon said pulleys which imparts to the gimp manufactured by this machine those quali' ties which have made it a commercial success and to which attention is hereinbefore directed.

The manner in which the covering thread 35 is wrapped around the core 26 is best indicated in Fig. 11. The covering thread 35 near the upper arrow in said Fig. 11 is wound around the core 26 from right to left and the covering thread near the lower arrow is wound from left to right.

It is obvious that many changes in the details of construction and arrangement of parts may be made without departing from the scope of the invention or of the various claims.

I claim as my invention:

1. A gimp-making machine comprising a frame, a twisting head mounted thereupon, a plurality of strand holders upon said twisting-head, a standard carried upon the twisting head and rotatable therewith, a plurality of grooved pulleys upon the twisting-head over which the strands successively pass after being assembled together and before same are twisted, the second pulley in the series being provided with a groove deeper than the groove of the first Ipulliey, and means'for rotating the twisting- 2. A gimp-making machine comprising a frame, a twisting-head'mounted thereupon, a plurality of strandholders upon said twisting head, a plurality of grooved pulleys upon the twisting-head over which the strands successively pass after being assembled together and before same are twisted,

ill, I ,098,0.8 1

the second pulley in the series being provided with a groove deeper than the groove of the first pulley, the third pulley in the series being provided with a groove deeper than the groove of the second pulley, and means for rotating the twisting head.

3. A gimp-making machine comprising a frame, a twisting-head, a plurality of grooved pulleys upon the twisting-head and rotatable therewith, said pulleys being adapted to receive and compact the untwisted strands, the second pulley in the series being provided with a groove deeper than the groove of the first pulley, a pair of shafts supported in the frame, pulleys upon said shafts, said last-mentioned pulleys being adapted to receive the compacted and twisted core from said first -mentioned pulleys, means for rotating the twistinghead, and means for wrapping the core, said wrapping means being adapted to operate upon the cote after said core has passed off said second-mentioned pulleys.

4. A gimp-making machine comprising a frame, a twisting-head mounted thereupon a plurality of strand-holders upon said twisting-head, a standard carried upon said twisting-head and rotatable therewith, a plurality of grooved pulleys upon the twisting-head and rotatable therewith, said pulleys being adapted to receive and compact the untwisted strands, the second pulley in the series being provided with a groove deeper than the groove of the first pulley, a

7 pair of shafts supported in the frame, pulleys upon said shafts, said last-mentioned pulleys being adapted to receive the compacted and untwisted core from said firstmentioned pulleys, means for rotating the twisting head, and means for wrapping the core, said wrapping means being adapted to operate upon the core after said core has passed off said second-mentioned pulleys.

5. A gimp-making machine comprising a frame, a twisting-head, a plurality of pulleys upon the twisting-head and rotatable therewith, said pulleys being adapted to receive and compact the strands, a pair of shafts supported in the frame, pulleys upon said shafts, said last-mentioned pulleys being adapted to receive the compacted and twisted core from said first-mentioned pulleys, said core being twisted intermediate said two sets of pulleys, means for rotating the twisting-head, means for holding the core taut after same has passed off said second-mentioned pulleys, and means for wrapping the core, said wrapping means be ing adapted to operate upon that core which is stretched taut.

6. A gimp-making machine comprising a frame, a twisting-head, a plurality of pulleys upon the twisting-head and rotatable therewith, said pulleys being adapted to receive and compact the strands, a pair of shafts supported in the frame, pulleys upon said shafts, said last-mentioned pulleys being adapted to receive the compacted and twisted core from said first-mentioned pul leys, said core being twisted intermediate said two sets of pulleys, means for rotating the twisting-head, means for holding the core taut after same has passed ofi said second-mentioned pulleys, and means for wrapping the core, said wrapping means being adapted to operate that core which is stretched taut, said wrapping means being adapted to lay covering thread against the twist of the core.

7. A gimp-making machine comprising a frame, a pair of shafts supported therein, pulleys upon said shafts, a twisting-head, a plurality of grooved pulleys upon the twisting-head and rotatable therewith over which pulleys or strands are adapted to pass after being assembled together, said pulleys upon the twistinghead being adapted to compact the strands, the second pulley in the series being provided with a groove deeper than the groove of the first pulley, the compacted core after leaving said pulleys upon the head being adapted to pass over the pulleys upon said shafts, the core being in substantial alinement with the axis of rotation of the twisting-head when intermediate the pulleys upon said head and the first of the pulleys upon said shafts, means for rotating the twisting-head, and a flier to lay a wrapping fiber upon the core, said flier being adapted to rotate in a direction opposite to the twist of the core.

In testimony whereof I have hereunto affixed my name in the presence of two witnesses.

CI-IRISTOPH F. BAIM. Htnesses J AS, L. FARNUM, Rom. KLOTZ.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

